Table 1
Potato genotypes (Solanum tuberosum L.) used for water deficit experiment with two commercial varieties and 13 genotypes from advanced breeding population developed by the International Potato Center (CIP). Source: CIP
| G01 |
CIP720088 (Achirana-INTA) |
|
Early |
|
19 |
| G02 |
CIP392797.22 (UNICA) |
Lowland and highland Tropics |
Medium |
|
21 |
| G03 |
CIP397077.16 |
Lowland tropics |
Medium |
|
20 |
| G04 |
CIP398192.213 |
Mid elevation tropics |
Medium |
Tolerant |
22 |
| G05 |
CIP398180.612 |
|
Medium |
|
|
| G06 |
CIP398208.704 |
Mid elevation tropics |
Medium |
Tolerant |
24 |
| G07 |
CIP398098.119 |
Mid elevation tropics |
Medium |
Tolerant |
26 |
| G08 |
CIP398190.89 |
Mid elevation tropics |
Medium |
Tolerant |
21 |
| G09 |
CIP398192.592 |
Mid elevation tropics |
Medium |
Tolerant |
21 |
| G10 |
CIP398201.510 |
Mid elevation tropics |
Medium |
Tolerant |
20 |
| G11 |
CIP398203.244 |
Mid elevation tropics |
Medium |
Tolerant |
20 |
| G12 |
CIP398203.5 |
Mid elevation tropics |
Medium |
Tolerant |
13 |
| G13 |
CIP398208.219 |
Mid elevation tropics |
Medium |
Tolerant |
22 |
| G14 |
CIP398208.33 |
Mid elevation tropics |
Medium |
Tolerant |
21 |
| G15 |
CIP398208.620 |
Mid elevation tropics |
Medium |
Tolerant |
21 |
Tables 2
Treatment comparison for 17 variables between Well-Watered (WW) and Water Deficit (WD) in 15 potato genotypes. The values for different variables are represented by the mean ± standard deviation with the significance under t-test with their respective p-values.
| Chlorophyll concentration (SPAD) at 29 dap |
56.1 ± 4.9 |
56.7 ± 5.0 |
0.4 |
| Chlorophyll concentration (SPAD) at 59 dap |
47.9 ± 4.4 |
45.8 ± 3.7 |
0.002 |
| Chlorophyll concentration (SPAD) at 76 dap |
46.0 ± 5.4 |
41.7 ± 3.6 |
<0.001 |
| Chlorophyll concentration (SPAD) at 83 dap |
44.1 ± 5.9 |
39.7 ± 4.5 |
<0.001 |
| Plant height (cm) |
132 ± 15 |
150 ± 16 |
<0.001 |
| Relative water content (%) |
58 ± 6 |
69 ± 5 |
<0.001 |
| Leaf osmotic potential (MPa) |
-2.84 ± 0.30 |
-2.25 ± 0.29 |
<0.001 |
| Leaf dry weight (g) |
12.0 ± 3.7 |
17.3 ± 5.5 |
<0.001 |
| Stem dry weight (g) |
11.6 ± 9.1 |
14.5 ± 6.1 |
<0.001 |
| Root dry weight (g) |
3.67 ± 1.94 |
3.50 ± 1.96 |
0.6 |
| Tuber dry weight (g) |
24 ± 11 |
40 ± 19 |
<0.001 |
| Tuber number (N°) |
12.0 ± 6.2 |
12.0 ± 4.9 |
0.8 |
| Total transpiration (mL) |
4.52 ± 1.22 |
7.85 ± 2.20 |
<0.001 |
| Leaf area (cm2) |
2,488 ± 797 |
7,100 ± 2,380 |
<0.001 |
| Root length (cm) |
33.1 ± 6.5 |
32.5 ± 5.8 |
0.4 |
| Total dry biomass (g) |
51 ± 16 |
75 ± 24 |
<0.001 |
| Harvest index (HI) |
0.47 ± 0.16 |
0.53 ± 0.14 |
0.020 |
| Specific leaf area (cm2g-1) |
218 ± 62 |
415 ± 82 |
<0.001 |
| Relative chlorophyll content (RCC) |
0.021 ± 0.015 |
0.008 ± 0.007 |
<0.001 |
| Biomass water use efficiency (gL-1) |
11.32 ± 2.15 |
9.53 ± 1.26 |
<0.001 |
| Tuber water use efficiency (gL-1) |
5.31 ± 2.03 |
5.09 ± 1.75 |
0.5 |
Table S1
Genetic variance (V.g), Error variance (V.e), and repeatability in 15 potatoes genotypes.
| Chlorophyll concentration (SPAD) at 29 dap |
56.36 |
4.14 |
46.93 |
61.96 |
16.20 |
9.19 |
0.88 |
| Chlorophyll concentration (SPAD) at 59 dap |
46.84 |
3.32 |
40.88 |
52.97 |
10.40 |
6.00 |
0.87 |
| Chlorophyll concentration (SPAD) at 76 dap |
43.88 |
3.60 |
39.03 |
52.10 |
11.43 |
15.04 |
0.75 |
| Chlorophyll concentration (SPAD) at 83 dap |
42.02 |
3.66 |
37.14 |
50.59 |
11.57 |
17.60 |
0.72 |
| Plant height (cm) |
141.19 |
13.62 |
111.40 |
161.30 |
169.19 |
163.20 |
0.81 |
| Relative water content (%) |
63.46 |
2.73 |
58.67 |
70.53 |
1.19 |
62.53 |
0.07 |
| Leaf osmotic potential (MPa) |
-2.55 |
0.10 |
-2.69 |
-2.39 |
0.00 |
0.17 |
0.00 |
| Leaf dry weight (g) |
14.62 |
4.17 |
3.42 |
20.03 |
16.00 |
14.12 |
0.82 |
| Stem dry weight (g) |
12.60 |
4.75 |
2.82 |
22.30 |
19.96 |
9.41 |
0.89 |
| Root dry weight (g) |
3.54 |
1.76 |
0.82 |
6.45 |
3.02 |
0.63 |
0.95 |
| Tuber dry weight (g) |
31.66 |
12.18 |
11.63 |
53.15 |
131.65 |
168.57 |
0.76 |
| Tuber number (N°) |
12.04 |
3.43 |
6.00 |
17.40 |
9.55 |
21.90 |
0.64 |
| Total transpiration (mL) |
6.18 |
1.39 |
2.77 |
8.37 |
1.49 |
4.53 |
0.57 |
| Leaf area (cm2) |
4938.49 |
1467.31 |
1027.44 |
7072.80 |
1431807.63 |
7188488.76 |
0.44 |
| Root length (cm) |
32.85 |
4.72 |
24.60 |
39.50 |
20.57 |
16.60 |
0.83 |
| Total dry biomass (g) |
62.74 |
15.58 |
26.42 |
87.80 |
209.08 |
341.65 |
0.71 |
| Harvest index (HI) |
0.50 |
0.14 |
0.18 |
0.72 |
0.02 |
0.00 |
0.96 |
| Specific leaf area (cm2g-1) |
319.39 |
43.38 |
256.34 |
410.06 |
115.92 |
14981.60 |
0.03 |
| Relative chlorophyll content (RCC) |
0.01 |
0.01 |
0.01 |
0.04 |
0.00 |
0.00 |
0.80 |
| Biomass water use efficiency (gL-1) |
10.35 |
0.92 |
9.21 |
12.12 |
0.64 |
1.54 |
0.62 |
| Tuber water use efficiency (gL-1) |
5.19 |
1.70 |
1.81 |
7.95 |
2.83 |
0.73 |
0.94 |